ARCHER1050: A Study of Dacomitinib vs. Gefitinib in 1st-Line Treatment Of Advanced NSCLC.

Sponsor
Pfizer (Industry)
Overall Status
Completed
CT.gov ID
NCT01774721
Collaborator
(none)
452
52
2
104.6
8.7
0.1

Study Details

Study Description

Brief Summary

This is a multinational, multicenter, randomized, open-label, Phase 3 study comparing the efficacy and safety of treatment with dacomitinib (PF-00299804) to treatment with gefitinib in patients with locally advanced or metastatic non-small cell lung cancer, with epidermal growth factor receptor EGFR-activating mutation (s). Analyses of primary objective (Progression Free Survival) will be done as defined in the protocol.

Condition or Disease Intervention/Treatment Phase
Phase 3

Detailed Description

452 patients were randomized in a 1:1 ratio between dacomitinib (PF-00299804 ) vs. gefitinib.

Study Design

Study Type:
Interventional
Actual Enrollment :
452 participants
Allocation:
Randomized
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
ARCHER 1050: A RANDOMIZED, OPEN-LABEL, PHASE 3, EFFICACY AND SAFETY STUDY OF DACOMITINIB (PF-00299804) VERSUS GEFITINIB FOR THE FIRST LINE TREATMENT OF LOCALLY ADVANCED OR METASTATIC NON-SMALL CELL LUNG CANCER IN SUBJECTS WITH EPIDERMAL GROWTH FACTOR RECEPTOR (EGFR) ACTIVATING MUTATION(S)
Actual Study Start Date :
May 9, 2013
Actual Primary Completion Date :
Jul 29, 2016
Actual Study Completion Date :
Jan 27, 2022

Arms and Interventions

Arm Intervention/Treatment
Experimental: Dacomitinib (PF-00299804)

Dacomitinib (PF-00299804) is provided as 45 mg tablets, continuous oral daily dosing.

Drug: Dacomitinib (PF-00299804)
Dacomitinib (PF-00299804) 45 mg tablets, continuous oral daily dosing.
Other Names:
  • Dacomitinib
  • Active Comparator: gefitinib

    Gefitinib is provided as 250 mg tablets, continuous oral daily dosing.

    Drug: Gefitinib
    Gefitinib 250 mg tablets, continuous oral daily dosing.
    Other Names:
  • Iressa
  • Outcome Measures

    Primary Outcome Measures

    1. Progression Free Survival (PFS) Based on Independent Radiologic Central (IRC) Review [Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)]

      PFS: time from randomization to date of progression of disease (PD) as determined by IRC review as per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria or death due to any cause, whichever occurred first. PD: >=20% increase in sum of diameters of target lesions (TLs), referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs. Overall tumor burden increased sufficiently to merit discontinuation of therapy. In presence of stable disease (did not achieve partial response, complete response or PD) or partial response (>=30% decrease under baseline of sum of diameters of all target measurable lesions, short diameter used in the sum for target nodes, longest diameter used in sum for all other target lesions) in target disease; for new lesions: appearance of any new unequivocal malignant lesion indicated PD.

    Secondary Outcome Measures

    1. Progression Free Survival (PFS) Based on Investigator Assessment [Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)]

      PFS: time from randomization to date of PD as determined by investigator assessment as per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria or death due to any cause, whichever occurred first. PD for target lesions: 20% increase in sum of diameters of target measurable lesions above smallest sum observed, with minimum absolute increase of 5 mm; for non-target lesions: unequivocal progression of pre-existing lesions. Overall tumor burden increased sufficiently to merit discontinuation of therapy. In presence of stable disease (did not achieve partial response, complete response or PD) or partial response (>=30% decrease under baseline of sum of diameters of all target measurable lesions, short diameter used in the sum for target nodes, longest diameter used in sum for all other target lesions) in target disease; for new lesions: appearance of any new unequivocal malignant lesion indicated PD.

    2. Number of Participants With Best Overall Response (BOR) Based on IRC Review [Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)]

      BOR for CR/PR:>=1 objective status (OBS) of CR/PR documented before PD; SD:>=1 OBS of stable documented >=8 weeks (wks) post treatment & before PD, not qualifying as CR/PR; PD:OBS of PD within 12 wks treatment, not qualifying as CR/PR/SD; indeterminate:PD not documented within 12 wks post treatment & no other response category applies. RECIST v1.1, CR:disappearance of all target lesions (TLs), non TLs;any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. SD:neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, referring smallest sum diameters on study. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions;unequivocal progression of existing non TLs.

    3. Number of Participants With Best Overall Response (BOR) Based on Investigator Assessment [Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)]

      BOR for CR/PR:>=1 objective status (OBS) of CR/PR documented before PD; SD:>=1 OBS of stable documented >=8 weeks (wks) post treatment & before PD, not qualifying as CR/PR; PD:OBS of PD within 12 wks treatment, not qualifying as CR/PR/SD; indeterminate:PD not documented within 12 wks post treatment & no other response category applies. RECIST v1.1, CR:disappearance of all target lesions (TLs), non TLs;any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. SD:neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, referring smallest sum diameters on study. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions;unequivocal progression of existing non TLs.

    4. Objective Response Rate (ORR) Based on IRC Review [Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)]

      Percentage of participants with a BOR of either CR or PR based on IRC review recorded from the start of treatment until disease progression based on RECIST v1.1. CR: disappearance of all target lesions (TLs), non TLs; any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs.

    5. Objective Response Rate (ORR) Based on Investigator Assessment [Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)]

      Percentage of participants with a BOR of either CR or PR based on investigator assessment recorded from the start of treatment until disease progression based on RECIST v1.1. CR: disappearance of all target lesions (TLs), non TLs; any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs.

    6. Duration of Response (DoR) [Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)]

      DoR was defined as time from first documentation of objective response(CR or PR, whichever occurred first)to date of PD/death from any cause, whichever occurred first. CR: disappearance of all target lesions (TLs), non TLs; any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs. DoR was recorded based on IRC review and investigator's assessment and summarized for subgroup of participants with objective disease response.

    7. Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) [From baseline up to 28-35 days after last dose of study drug (up to 48 months)]

      An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs were events between first dose of study drug and up to 28-35 days after last dose that were absent before treatment or that worsened relative to pretreatment state. AEs included both serious and non- serious adverse events.

    8. Number of Participants With Laboratory Test Abnormalities of Grade 3 or Higher Severity Based on NCI CTCAE Version 4.0: Biochemistry and Haematology [From baseline up to 28-35 days after last dose of study drug (up to 48 months)]

      Parameters included anaemia, activated partial thromboplastin time, haemoglobin, international normalized ratio, lymphocyte count, lymphopenia, neutrophils (absolute), platelets, prothrombin time and white blood cells. Biochemistry parameters included alanine aminotransferase (increased), alkaline phosphatase (increased), aspartate aminotransferase (increased), bilirubin (total), creatinine (increased), hypercalcaemia, hyperglycaemia, hyperkalaemia, hypermagnesaemia, hypernatraemia, hypoalbuminaemia, hypocalcaemia, hypoglycaemia, hypokalaemia, hypomagnesaemia, hyponatraemia. Test abnormalities were graded by AEs according to the Common Terminology Criteria for Adverse Events(NCI CTCAE) version 4.0 as Grade 1=mild; Grade 2=moderate; Grade 3=severe; Grade 4=life-threatening; Grade 5=death related to AE. Only categories with at least 1 participant with abnormality are reported in this outcome measure.

    9. Number of Participants With Laboratory Test Abnormalities: Urinalysis [From baseline up to 28-35 days after last dose of study drug (up to 48 months)]

      Urinalysis parameter included urine protein, urine blood/haemoglobin, urine glucose and urine sediment. Test abnormalities was defined as deviation from normal range (higher or lower). Normal range of 24-hour urine protein test: less than 150 mg of protein per day, urine glucose: 0 to 0.8 mmol/L (millimole per liter), urine protein: 0 to 20 mg/dL (milligrams per deciliter). Urine blood/haemoglobin abnormality was defined as presence and absence of blood/haemoglobin in urine of participants. Urine sediment abnormality was defined as the presence of any bacteria, casts, crystals, and epithelial cells. Only categories with at least 1 participant with abnormality are reported in this outcome measure.

    10. Number of Participants With Clinically Significant Abnormalities in Vital Signs [From baseline up to 28-35 days after last dose of study drug (up to 48 months)]

      Criteria for vital signs abnormalities: systolic pulse rate less than (<) 50 beats per minute (bpm) or greater than (>)130 bpm and maximum increase or decrease from baseline in pulse rate of 30 bpm. Systolic blood pressure of maximum increase from baseline (MIB) >=40 millimeters of mercury (mmHg), maximum decrease from baseline (MDB) in systolic blood pressure =<60 mmHg. Diastolic blood pressure of MIB >=20 mmHg and MDB in diastolic blood pressure >40 and =<20 mm Hg. Only categories with at least 1 participant with abnormality are reported in this outcome measure.

    11. Number of Participants With Clinically Significant Abnormality in Electrocardiogram (ECG) [From baseline up to 28-35 days after last dose of study drug (up to 48 months)]

      ECG parameters included corrected QT interval using Bazett's formula (QTcB) and corrected QT interval using Fridericia's formula (QTcF). ECG criteria for abnormality: absolute value 450 - <480 msec, 480 - <500 msec, >=500. The number of participants with potentially clinically significant ECG findings at any visit were reported.

    12. Number of Participants With Maximum Relative Decrease From Baseline >20% in Left Ventricular Ejection Fraction (LVEF) [From baseline up to 7 days of Cycle 4 (up to 91 days)]

      An ejection fraction (EF) was the volumetric fraction of blood ejected from a ventricle of the heart with each heartbeat; it was a measure of the pumping efficiency of the heart. The EF of the left heart, known as the left ventricular ejection fraction, was a measure of the efficiency of pumping into the body's systemic circulation.

    13. Health Related Quality of Life (HRQOL): Time to Deterioration (TTD) in Pain, Dyspnea, Fatigue or Cough [Baseline until the end of treatment (up to 48 months)]

      HRQOL was measured by standardized questionnaires (European Organization for Research and Treatment of Cancer (EORTC)) quality of life questionnaires (OLQ-C30) and its lung cancer module (QLQ-LC13). TTD in pain (chest, arm/shoulder), dyspnea, fatigue or cough was defined as time between baseline and first occurrence of increase in score of 10 points or greater from baseline in any of these 4 symptoms for at least two consecutive cycles. For those who had not shown deterioration, the data was censored at the last date when the participants completed an assessment for pain, dyspnea, fatigue or cough.

    14. Overall Mean Scores of Euro Quality of Life-5 Dimension Visual Analog Scale (EQ-5D VAS) [From Cycle 1 Day 1 up to 48 months]

      The Euro Quality of Life-5 dimension (EQ-5D) is a brief self-administered, validated reliable generic health status instrument. EQ-5D general health status can also be measured by a visual analog scale (EQ-5D VAS). EQ-5D VAS measures the participant's self-rated health status on a scale from 0 (worst imaginable health state) to 100 (best imaginable health state).

    15. Maximum Observed Plasma Concentration (Cmax) of Dacomitinib and Its Metabolite PF-05199265 [Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)]

    16. Time to Reach Maximum Observed Plasma Concentration (Tmax) of Dacomitinib and Its Metabolite PF-05199265 [Pre-dose and 2, 4, 6, 8, and 24 hours post-dose (sample collection time points had window of +/- 10% of nominal time) on Cycle 2 Day 1 (Day 29)]

    17. Area Under the Plasma Concentration-Time Curve From Time Zero (0) to End of Dosing Interval (AUCtau) of Dacomitinib and Its Metabolite PF-05199265 [Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)]

    18. Averaged Plasma Concentration at Steady State (Cavg) of Dacomitinib and Its Metabolite PF-05199265 [Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)]

    19. Minimum Observed Plasma Concentration (Cmin) of Dacomitinib and Its Metabolite PF-05199265 [Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)]

    20. Fluctuation Coefficient Between Trough and Peak Plasma Concentration (DF) of Dacomitinib and Its Metabolite PF-05199265 [Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)]

      Fluctuation coefficient between trough and peak plasma concentration was determined as Cmax-Ctrough divided by Cavg, where Cmax was the maximum observed concentration within the dosing interval, Ctrough was the observed concentration prior to dose administration and Cavg was averaged plasma concentration at steady state.

    21. Apparent Clearance (CL) of Dacomitinib [Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)]

      Drug clearance was a quantitative measure of the rate at which a drug substance was removed from the blood (rate at which a drug is metabolized or eliminated by normal biological processes).

    22. Pre-dose Plasma Concentrations (Ctrough) of Dacomitinib and Its Metabolite PF-05199265 [Pre-dose on Day 1 of Cycle 2, 3, 4, 5 and 6]

      Trough plasma concentration was defined as the measured concentration at the end of a dosing interval at steady state (taken directly before next administration).

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years to 99 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Evidence of histo or cytopathology confirmed, advanced NSCLC (with known histology) with the presence of EGFR-activating mutation (exon 19 deletion or the L858R mutation in exon 21).

    • It is acceptable for subjects with the presence of the exon 20 T790M mutation together with either EGFR-activating mutation (exon 19 deletion or the L858R mutation in exon

    1. to be included in this study
    • No prior treatment with systemic therapy for locally advanced or metastatic NSCLC. Minimum of 12 months disease free interval between completion of neoadjuvant/adjuvant systemic therapy and recurrence of NSCLC

    • Adequate tissue sample must be available for central analyses.

    • Adequate renal, hematologic, liver function.

    • ECOG PS of 0-1.

    • Radiologically measurable disease.

    Exclusion Criteria:
    • Any evidence of mixed histology that includes elements of small cell or carcinoid lung cancer.

    • Any other mutation other than exon 19 deletion or L858R in exon 21, with or without the presence of the exon 20 T790M mutation.

    • Any history of brain metastases or leptomeningeal metastases.

    • Any previous anti-cancer systemic treatment of early, locally advanced, or metastatic NSCLC.

    • Any surgery(not including minor procedures such as lymph node biopsy), palliative radiotherapy or pleurodesis within 2 weeks of baseline assessments

    • Any clinically significant gastrointestinal abnormalities that may impair intake, transit or absorption of the study drug.

    • Current enrollment in another therapeutic clinical study.

    • History of, or currently suspected, diffuse non-infectious pneumonitis or interstitial lung disease

    • Uncontrolled medical disorders.

    • Prior malignancy and concurrent malignancy except for non melanoma skin cancer or in-situ cervical cancer with no evidence of active disease.

    • Use of narrow therapeutic index drugs that are CYP2D6 substrates from screening to randomization.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Beijing China
    2 Changchun China
    3 Changsha China
    4 Chengdu China
    5 Chongqing China
    6 Fuzhou China
    7 Guangzhou China
    8 Hangzhou China
    9 Hefei China
    10 Nanning China
    11 Shanghai China
    12 Shenyang China
    13 Tianjin China
    14 Wuhan China
    15 Wuxi China
    16 Hong Kong Hong Kong
    17 Shatin Hong Kong
    18 Catania Italy
    19 Lecco Italy
    20 Livorno Italy
    21 Meldola Italy
    22 Milano Italy
    23 Napoli Italy
    24 Perugia Italy
    25 Ravenna Italy
    26 Roma Italy
    27 Trento Italy
    28 Viterbo Italy
    29 Hokkaido Asahikawa Japan
    30 Kashiwa Chiba Japan
    31 Matsuyama Ehime Japan
    32 Yokohama Kanagawa Japan
    33 Tokyo Koto-ku Japan
    34 Osakasayama Osaka Japan
    35 Sakai Osaka Japan
    36 Sunto-gun Shizouka Japan
    37 Chuo-Ku Tokyo Japan
    38 Seoul Korea, Republic of
    39 Gdansk Poland
    40 Olsztyn Poland
    41 Poznan Poland
    42 Warszawa Poland
    43 Avila Spain
    44 Barcelona Spain
    45 Bilbao Spain
    46 Caceres Spain
    47 Cordoba Spain
    48 Las Palmas Spain
    49 Madrid Spain
    50 Malaga Spain
    51 San Sebastian Spain
    52 Seville Spain

    Sponsors and Collaborators

    • Pfizer

    Investigators

    • Study Director: Pfizer CT.gov Call Center, Pfizer

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    Pfizer
    ClinicalTrials.gov Identifier:
    NCT01774721
    Other Study ID Numbers:
    • A7471050
    • DP312804
    First Posted:
    Jan 24, 2013
    Last Update Posted:
    Feb 24, 2022
    Last Verified:
    Feb 1, 2022
    Individual Participant Data (IPD) Sharing Statement:
    Yes
    Plan to Share IPD:
    Yes
    Keywords provided by Pfizer
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details
    Pre-assignment Detail
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Period Title: Overall Study
    STARTED 227 225
    Treated 227 224
    COMPLETED 0 0
    NOT COMPLETED 227 225

    Baseline Characteristics

    Arm/Group Title Dacomitinib Gefitinib Total
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Total of all reporting groups
    Overall Participants 227 225 452
    Age (years) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [years]
    61.2
    (11.26)
    60.9
    (10.17)
    61.1
    (10.72)
    Sex: Female, Male (Count of Participants)
    Female
    146
    64.3%
    125
    55.6%
    271
    60%
    Male
    81
    35.7%
    100
    44.4%
    181
    40%
    Ethnicity (NIH/OMB) (Count of Participants)
    Hispanic or Latino
    0
    0%
    0
    0%
    0
    0%
    Not Hispanic or Latino
    227
    100%
    225
    100%
    452
    100%
    Unknown or Not Reported
    0
    0%
    0
    0%
    0
    0%
    Race (NIH/OMB) (Count of Participants)
    American Indian or Alaska Native
    0
    0%
    0
    0%
    0
    0%
    Asian
    170
    74.9%
    176
    78.2%
    346
    76.5%
    Native Hawaiian or Other Pacific Islander
    0
    0%
    0
    0%
    0
    0%
    Black or African American
    1
    0.4%
    0
    0%
    1
    0.2%
    White
    56
    24.7%
    49
    21.8%
    105
    23.2%
    More than one race
    0
    0%
    0
    0%
    0
    0%
    Unknown or Not Reported
    0
    0%
    0
    0%
    0
    0%

    Outcome Measures

    1. Primary Outcome
    Title Progression Free Survival (PFS) Based on Independent Radiologic Central (IRC) Review
    Description PFS: time from randomization to date of progression of disease (PD) as determined by IRC review as per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria or death due to any cause, whichever occurred first. PD: >=20% increase in sum of diameters of target lesions (TLs), referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs. Overall tumor burden increased sufficiently to merit discontinuation of therapy. In presence of stable disease (did not achieve partial response, complete response or PD) or partial response (>=30% decrease under baseline of sum of diameters of all target measurable lesions, short diameter used in the sum for target nodes, longest diameter used in sum for all other target lesions) in target disease; for new lesions: appearance of any new unequivocal malignant lesion indicated PD.
    Time Frame Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 225
    Median (95% Confidence Interval) [months]
    14.7
    9.2
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Dacomitinib, Gefitinib
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method 1-sided stratified log-rank test
    Comments
    Method of Estimation Estimation Parameter Hazard Ratio (HR)
    Estimated Value 0.589
    Confidence Interval (2-Sided) 95%
    0.469 to 0.739
    Parameter Dispersion Type:
    Value:
    Estimation Comments Based on stratified Cox regression model
    2. Secondary Outcome
    Title Progression Free Survival (PFS) Based on Investigator Assessment
    Description PFS: time from randomization to date of PD as determined by investigator assessment as per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria or death due to any cause, whichever occurred first. PD for target lesions: 20% increase in sum of diameters of target measurable lesions above smallest sum observed, with minimum absolute increase of 5 mm; for non-target lesions: unequivocal progression of pre-existing lesions. Overall tumor burden increased sufficiently to merit discontinuation of therapy. In presence of stable disease (did not achieve partial response, complete response or PD) or partial response (>=30% decrease under baseline of sum of diameters of all target measurable lesions, short diameter used in the sum for target nodes, longest diameter used in sum for all other target lesions) in target disease; for new lesions: appearance of any new unequivocal malignant lesion indicated PD.
    Time Frame Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 225
    Median (95% Confidence Interval) [months]
    16.6
    11.0
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Dacomitinib, Gefitinib
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method 1-sided stratified log-rank test
    Comments
    Method of Estimation Estimation Parameter Hazard Ratio (HR)
    Estimated Value 0.622
    Confidence Interval (2-Sided) 95%
    0.497 to 0.779
    Parameter Dispersion Type:
    Value:
    Estimation Comments Based on stratified Cox regression model
    3. Secondary Outcome
    Title Number of Participants With Best Overall Response (BOR) Based on IRC Review
    Description BOR for CR/PR:>=1 objective status (OBS) of CR/PR documented before PD; SD:>=1 OBS of stable documented >=8 weeks (wks) post treatment & before PD, not qualifying as CR/PR; PD:OBS of PD within 12 wks treatment, not qualifying as CR/PR/SD; indeterminate:PD not documented within 12 wks post treatment & no other response category applies. RECIST v1.1, CR:disappearance of all target lesions (TLs), non TLs;any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. SD:neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, referring smallest sum diameters on study. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions;unequivocal progression of existing non TLs.
    Time Frame Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 225
    Complete response
    12
    5.3%
    4
    1.8%
    Partial response
    158
    69.6%
    157
    69.8%
    Stable disease
    30
    13.2%
    27
    12%
    Progressive disease
    12
    5.3%
    15
    6.7%
    Indeterminate
    15
    6.6%
    22
    9.8%
    4. Secondary Outcome
    Title Number of Participants With Best Overall Response (BOR) Based on Investigator Assessment
    Description BOR for CR/PR:>=1 objective status (OBS) of CR/PR documented before PD; SD:>=1 OBS of stable documented >=8 weeks (wks) post treatment & before PD, not qualifying as CR/PR; PD:OBS of PD within 12 wks treatment, not qualifying as CR/PR/SD; indeterminate:PD not documented within 12 wks post treatment & no other response category applies. RECIST v1.1, CR:disappearance of all target lesions (TLs), non TLs;any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. SD:neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, referring smallest sum diameters on study. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions;unequivocal progression of existing non TLs.
    Time Frame Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 225
    Complete response
    2
    0.9%
    1
    0.4%
    Partial response
    169
    74.4%
    157
    69.8%
    Stable disease
    38
    16.7%
    49
    21.8%
    Progressive disease
    9
    4%
    11
    4.9%
    Indeterminate
    9
    4%
    7
    3.1%
    5. Secondary Outcome
    Title Objective Response Rate (ORR) Based on IRC Review
    Description Percentage of participants with a BOR of either CR or PR based on IRC review recorded from the start of treatment until disease progression based on RECIST v1.1. CR: disappearance of all target lesions (TLs), non TLs; any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs.
    Time Frame Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 225
    Number (95% Confidence Interval) [percentage of participants]
    74.9
    33%
    71.6
    31.8%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Dacomitinib, Gefitinib
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.1942
    Comments
    Method Cochran-Mantel-Haenszel
    Comments
    6. Secondary Outcome
    Title Objective Response Rate (ORR) Based on Investigator Assessment
    Description Percentage of participants with a BOR of either CR or PR based on investigator assessment recorded from the start of treatment until disease progression based on RECIST v1.1. CR: disappearance of all target lesions (TLs), non TLs; any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs.
    Time Frame Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 225
    Number (95% Confidence Interval) [percentage of participants]
    75.3
    33.2%
    70.2
    31.2%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Dacomitinib, Gefitinib
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0924
    Comments
    Method Cochran-Mantel-Haenszel
    Comments
    7. Secondary Outcome
    Title Duration of Response (DoR)
    Description DoR was defined as time from first documentation of objective response(CR or PR, whichever occurred first)to date of PD/death from any cause, whichever occurred first. CR: disappearance of all target lesions (TLs), non TLs; any pathological lymph nodes (LN) must reduce in short axis to <10 mm; normalization of tumour marker level, for non TL all LN must be non-pathological in size (<10 mm short axis); PR:>=30% decrease in sum of diameters of TLs, referring baseline sum diameters. PD:>=20% increase in sum of diameters of TLs, referring smallest sum on study, sum must be an absolute increase of >=5 mm, appearance of >=1 new lesions; unequivocal progression of existing non TLs. DoR was recorded based on IRC review and investigator's assessment and summarized for subgroup of participants with objective disease response.
    Time Frame Day 28 of Cycle 1, Cycle 2 then every 8 weeks until disease progression or death due to any cause, whichever occurred first (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    ITT Population included all randomized participants, with study treatment assignment designated according to initial randomization, regardless of whether participants received study treatment or a different treatment from that to which they were randomized.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 225
    DoR: IRC review
    14.8
    8.3
    DoR: Investigator assessment
    15.9
    9.2
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Dacomitinib, Gefitinib
    Comments Comparison of dacomitinib vs gefitinib based on IRC review
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method 1-sided stratified log-rank test
    Comments
    Method of Estimation Estimation Parameter Hazard Ratio (HR)
    Estimated Value 0.403
    Confidence Interval (2-Sided) 95%
    0.307 to 0.529
    Parameter Dispersion Type:
    Value:
    Estimation Comments Based on stratified Cox regression model
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Dacomitinib, Gefitinib
    Comments Comparison of dacomitinib vs gefitinib based on Investigator assessment
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method 1-sided stratified log-rank test
    Comments
    Method of Estimation Estimation Parameter Hazard Ratio (HR)
    Estimated Value 0.545
    Confidence Interval (2-Sided) 95%
    0.418 to 0.711
    Parameter Dispersion Type:
    Value:
    Estimation Comments Based on stratified Cox regression model
    8. Secondary Outcome
    Title Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
    Description An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs were events between first dose of study drug and up to 28-35 days after last dose that were absent before treatment or that worsened relative to pretreatment state. AEs included both serious and non- serious adverse events.
    Time Frame From baseline up to 28-35 days after last dose of study drug (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    Safety analysis set included all participants who received at least 1 dose of study medication, with treatment assignments designated according to actual study treatment received.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 224
    TEAEs
    226
    99.6%
    220
    97.8%
    SAEs
    62
    27.3%
    50
    22.2%
    9. Secondary Outcome
    Title Number of Participants With Laboratory Test Abnormalities of Grade 3 or Higher Severity Based on NCI CTCAE Version 4.0: Biochemistry and Haematology
    Description Parameters included anaemia, activated partial thromboplastin time, haemoglobin, international normalized ratio, lymphocyte count, lymphopenia, neutrophils (absolute), platelets, prothrombin time and white blood cells. Biochemistry parameters included alanine aminotransferase (increased), alkaline phosphatase (increased), aspartate aminotransferase (increased), bilirubin (total), creatinine (increased), hypercalcaemia, hyperglycaemia, hyperkalaemia, hypermagnesaemia, hypernatraemia, hypoalbuminaemia, hypocalcaemia, hypoglycaemia, hypokalaemia, hypomagnesaemia, hyponatraemia. Test abnormalities were graded by AEs according to the Common Terminology Criteria for Adverse Events(NCI CTCAE) version 4.0 as Grade 1=mild; Grade 2=moderate; Grade 3=severe; Grade 4=life-threatening; Grade 5=death related to AE. Only categories with at least 1 participant with abnormality are reported in this outcome measure.
    Time Frame From baseline up to 28-35 days after last dose of study drug (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    Safety analysis set included all participants who received at least 1 dose of study medication, with treatment assignments designated according to actual study treatment received.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 224
    Anaemia (Grade 3)
    2
    0.9%
    6
    2.7%
    Haemoglobin (Grade 3)
    0
    0%
    1
    0.4%
    Lymphopenia (Grade 3)
    13
    5.7%
    6
    2.7%
    Lymphopenia (Grade 4)
    1
    0.4%
    0
    0%
    Neutrophil count (absolute) (Grade 3)
    0
    0%
    1
    0.4%
    WBC count (Grade 3)
    1
    0.4%
    1
    0.4%
    Alanine aminotransferase increased (Grade 3)
    3
    1.3%
    26
    11.6%
    Alanine aminotransferase increased (Grade 4)
    0
    0%
    2
    0.9%
    Aspartate aminotransferase increased (Grade 3)
    1
    0.4%
    15
    6.7%
    Aspartate aminotransferase increased (Grade 4)
    0
    0%
    2
    0.9%
    Alkaline phosphatase increased (Grade 3)
    2
    0.9%
    6
    2.7%
    Bilirubin increased (total) (Grade 3)
    1
    0.4%
    1
    0.4%
    Creatinine increased (Grade 3)
    0
    0%
    1
    0.4%
    Hypercalcaemia (Grade 3)
    1
    0.4%
    0
    0%
    Hyperglycaemia (Grade 3)
    2
    0.9%
    5
    2.2%
    Hyperkalaemia (Grade 4)
    0
    0%
    2
    0.9%
    Hypermagnesaemia (Grade 3)
    7
    3.1%
    6
    2.7%
    Hypocalcaemia (Grade 3)
    3
    1.3%
    4
    1.8%
    Hypoglycaemia (Grade 3)
    0
    0%
    2
    0.9%
    Hypoglycaemia (Grade 4)
    1
    0.4%
    0
    0%
    Hypokalaemia (Grade 3)
    13
    5.7%
    5
    2.2%
    Hypokalaemia (Grade 4)
    2
    0.9%
    0
    0%
    Hypomagnesaemia (Grade 3)
    2
    0.9%
    0
    0%
    Hyponatraemia (Grade 3)
    6
    2.6%
    5
    2.2%
    Hyponatraemia (Grade 4)
    1
    0.4%
    1
    0.4%
    10. Secondary Outcome
    Title Number of Participants With Laboratory Test Abnormalities: Urinalysis
    Description Urinalysis parameter included urine protein, urine blood/haemoglobin, urine glucose and urine sediment. Test abnormalities was defined as deviation from normal range (higher or lower). Normal range of 24-hour urine protein test: less than 150 mg of protein per day, urine glucose: 0 to 0.8 mmol/L (millimole per liter), urine protein: 0 to 20 mg/dL (milligrams per deciliter). Urine blood/haemoglobin abnormality was defined as presence and absence of blood/haemoglobin in urine of participants. Urine sediment abnormality was defined as the presence of any bacteria, casts, crystals, and epithelial cells. Only categories with at least 1 participant with abnormality are reported in this outcome measure.
    Time Frame From baseline up to 28-35 days after last dose of study drug (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    Safety analysis set included all participants who received at least 1 dose of study medication, with treatment assignments designated according to actual study treatment received.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 224
    High Urine Protein
    1
    0.4%
    1
    0.4%
    Low Urine Glucose
    1
    0.4%
    0
    0%
    High Urine Blood/Haemoglobin
    4
    1.8%
    4
    1.8%
    11. Secondary Outcome
    Title Number of Participants With Clinically Significant Abnormalities in Vital Signs
    Description Criteria for vital signs abnormalities: systolic pulse rate less than (<) 50 beats per minute (bpm) or greater than (>)130 bpm and maximum increase or decrease from baseline in pulse rate of 30 bpm. Systolic blood pressure of maximum increase from baseline (MIB) >=40 millimeters of mercury (mmHg), maximum decrease from baseline (MDB) in systolic blood pressure =<60 mmHg. Diastolic blood pressure of MIB >=20 mmHg and MDB in diastolic blood pressure >40 and =<20 mm Hg. Only categories with at least 1 participant with abnormality are reported in this outcome measure.
    Time Frame From baseline up to 28-35 days after last dose of study drug (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    Safety analysis set included all participants who received at least 1 dose of study medication, with treatment assignments designated according to actual study treatment received.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 227 224
    MIB in systolic BP >=40 mmHg
    13
    5.7%
    20
    8.9%
    MDB in systolic BP <=-60 mmHg
    0
    0%
    1
    0.4%
    MIB in diastolic BP >=20 mmHg
    38
    16.7%
    44
    19.6%
    MDB in diastolic BP >-40 and <=-20mmHg
    46
    20.3%
    52
    23.1%
    MDB in diastolic BP <=-40 mmHg
    0
    0%
    1
    0.4%
    Maximum post baseline pulse rate >130 bpm
    2
    0.9%
    2
    0.9%
    Minimum post baseline pulse rate <50 bpm
    2
    0.9%
    0
    0%
    MIB in pulse rate >=30 bpm
    13
    5.7%
    12
    5.3%
    MDB in pulse rate <=-30 bpm
    17
    7.5%
    16
    7.1%
    MIB in body weight >=10%
    23
    10.1%
    42
    18.7%
    MDB in body weight <=10%
    45
    19.8%
    28
    12.4%
    12. Secondary Outcome
    Title Number of Participants With Clinically Significant Abnormality in Electrocardiogram (ECG)
    Description ECG parameters included corrected QT interval using Bazett's formula (QTcB) and corrected QT interval using Fridericia's formula (QTcF). ECG criteria for abnormality: absolute value 450 - <480 msec, 480 - <500 msec, >=500. The number of participants with potentially clinically significant ECG findings at any visit were reported.
    Time Frame From baseline up to 28-35 days after last dose of study drug (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    Safety analysis set included all participants who received at least 1 dose of study medication, with treatment assignments designated according to actual study treatment received. Here, "N" (number of participants analyzed) signifies participants who were evaluable for this specified outcome measure.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 217 7
    QTcF Criteria: 450-<480
    5
    2.2%
    0
    0%
    QTcB Criteria: 450-<480
    22
    9.7%
    0
    0%
    QTcB Criteria: 480-<500
    3
    1.3%
    0
    0%
    13. Secondary Outcome
    Title Number of Participants With Maximum Relative Decrease From Baseline >20% in Left Ventricular Ejection Fraction (LVEF)
    Description An ejection fraction (EF) was the volumetric fraction of blood ejected from a ventricle of the heart with each heartbeat; it was a measure of the pumping efficiency of the heart. The EF of the left heart, known as the left ventricular ejection fraction, was a measure of the efficiency of pumping into the body's systemic circulation.
    Time Frame From baseline up to 7 days of Cycle 4 (up to 91 days)

    Outcome Measure Data

    Analysis Population Description
    Safety analysis set included all participants who received at least 1 dose of study medication, with treatment assignments designated according to actual study treatment received. Here "N" signifies number of participants who were evaluable for this specified outcome measure.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 191 199
    Count of Participants [Participants]
    5
    2.2%
    5
    2.2%
    14. Secondary Outcome
    Title Health Related Quality of Life (HRQOL): Time to Deterioration (TTD) in Pain, Dyspnea, Fatigue or Cough
    Description HRQOL was measured by standardized questionnaires (European Organization for Research and Treatment of Cancer (EORTC)) quality of life questionnaires (OLQ-C30) and its lung cancer module (QLQ-LC13). TTD in pain (chest, arm/shoulder), dyspnea, fatigue or cough was defined as time between baseline and first occurrence of increase in score of 10 points or greater from baseline in any of these 4 symptoms for at least two consecutive cycles. For those who had not shown deterioration, the data was censored at the last date when the participants completed an assessment for pain, dyspnea, fatigue or cough.
    Time Frame Baseline until the end of treatment (up to 48 months)

    Outcome Measure Data

    Analysis Population Description
    Patient reported outcomes (PRO) analysis set included all enrolled participants, who started treatment and completed a baseline PRO assessments and at least one post-baseline PRO assessment after the first dose.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 226 222
    Median (95% Confidence Interval) [months]
    3.8
    6.6
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Dacomitinib, Gefitinib
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.1641
    Comments
    Method Unstratified Log-rank Test
    Comments
    Method of Estimation Estimation Parameter Cox Proportional Hazard
    Estimated Value 1.173
    Confidence Interval (2-Sided) 95%
    0.928 to 1.483
    Parameter Dispersion Type:
    Value:
    Estimation Comments
    15. Secondary Outcome
    Title Overall Mean Scores of Euro Quality of Life-5 Dimension Visual Analog Scale (EQ-5D VAS)
    Description The Euro Quality of Life-5 dimension (EQ-5D) is a brief self-administered, validated reliable generic health status instrument. EQ-5D general health status can also be measured by a visual analog scale (EQ-5D VAS). EQ-5D VAS measures the participant's self-rated health status on a scale from 0 (worst imaginable health state) to 100 (best imaginable health state).
    Time Frame From Cycle 1 Day 1 up to 48 months

    Outcome Measure Data

    Analysis Population Description
    PRO analysis set included all enrolled participants, who started treatment and completed a baseline PRO assessments and at least one post-baseline PRO assessment after the first dose. Here "N" signifies number of participants who were evaluable for this specified outcome measure.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 224 221
    Mean (95% Confidence Interval) [units on a scale]
    73.3869
    77.6923
    16. Secondary Outcome
    Title Maximum Observed Plasma Concentration (Cmax) of Dacomitinib and Its Metabolite PF-05199265
    Description
    Time Frame Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least 1 measured plasma concentration and were dose-compliant (who received 45 mg dacomitinib daily without interruptions/dose reductions for at least 14 days prior to day of data collection). This outcome measure was planned to be analyzed in Chinese subgroup only.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 19
    Dacomitinib
    84.19
    (21.90)
    PF-05199265
    12.77
    (7.58)
    17. Secondary Outcome
    Title Time to Reach Maximum Observed Plasma Concentration (Tmax) of Dacomitinib and Its Metabolite PF-05199265
    Description
    Time Frame Pre-dose and 2, 4, 6, 8, and 24 hours post-dose (sample collection time points had window of +/- 10% of nominal time) on Cycle 2 Day 1 (Day 29)

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least 1 measured plasma concentration and were dose-compliant (who received 45 mg dacomitinib daily without interruptions/dose reductions for at least 14 days prior to day of data collection). This outcome measure was planned to be analyzed in Chinese subgroup only.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 19
    Dacomitinib
    4.03
    PF-05199265
    6.0
    18. Secondary Outcome
    Title Area Under the Plasma Concentration-Time Curve From Time Zero (0) to End of Dosing Interval (AUCtau) of Dacomitinib and Its Metabolite PF-05199265
    Description
    Time Frame Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least 1 measured plasma concentration and were dose-compliant (who received 45 mg dacomitinib daily without interruptions/dose reductions for at least 14 days prior to day of data collection). This outcome measure was planned to be analyzed in Chinese subgroup only.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 19
    Dacomitinib
    1712.08
    (413.61)
    PF-05199265
    278.47
    (163.53)
    19. Secondary Outcome
    Title Averaged Plasma Concentration at Steady State (Cavg) of Dacomitinib and Its Metabolite PF-05199265
    Description
    Time Frame Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least 1 measured plasma concentration and were dose-compliant (who received 45 mg dacomitinib daily without interruptions/dose reductions for at least 14 days prior to day of data collection). This outcome measure was planned to be analyzed in Chinese subgroup only.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 19
    Dacomitinib
    71.33
    (17.23)
    PF-05199265
    11.60
    (6.81)
    20. Secondary Outcome
    Title Minimum Observed Plasma Concentration (Cmin) of Dacomitinib and Its Metabolite PF-05199265
    Description
    Time Frame Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least 1 measured plasma concentration and were dose-compliant (who received 45 mg dacomitinib daily without interruptions/dose reductions for at least 14 days prior to day of data collection). This outcome measure was planned to be analyzed in Chinese subgroup only.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 19
    Dacomitinib
    60.64
    (14.85)
    PF-05199265
    10.49
    (6.26)
    21. Secondary Outcome
    Title Fluctuation Coefficient Between Trough and Peak Plasma Concentration (DF) of Dacomitinib and Its Metabolite PF-05199265
    Description Fluctuation coefficient between trough and peak plasma concentration was determined as Cmax-Ctrough divided by Cavg, where Cmax was the maximum observed concentration within the dosing interval, Ctrough was the observed concentration prior to dose administration and Cavg was averaged plasma concentration at steady state.
    Time Frame Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least 1 measured plasma concentration and were dose-compliant (who received 45 mg dacomitinib daily without interruptions/dose reductions for at least 14 days prior to day of data collection). This outcome measure was planned to be analyzed in Chinese subgroup only.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 19
    Dacomitinib
    0.2883
    (0.1460)
    PF-05199265
    0.1105
    (0.0827)
    22. Secondary Outcome
    Title Apparent Clearance (CL) of Dacomitinib
    Description Drug clearance was a quantitative measure of the rate at which a drug substance was removed from the blood (rate at which a drug is metabolized or eliminated by normal biological processes).
    Time Frame Pre-dose and 2, 4, 6, 8, and 24 hours post-dose on Cycle 2 Day 1 (Day 29)

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least 1 measured plasma concentration and were dose-compliant (who received 45 mg dacomitinib daily without interruptions/dose reductions for at least 14 days prior to day of data collection). This outcome measure was planned to be analyzed in Chinese subgroup only.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 19
    Mean (Standard Deviation) [Liter/hour]
    27.61
    (5.97)
    23. Secondary Outcome
    Title Pre-dose Plasma Concentrations (Ctrough) of Dacomitinib and Its Metabolite PF-05199265
    Description Trough plasma concentration was defined as the measured concentration at the end of a dosing interval at steady state (taken directly before next administration).
    Time Frame Pre-dose on Day 1 of Cycle 2, 3, 4, 5 and 6

    Outcome Measure Data

    Analysis Population Description
    PK analysis set included all participants who were treated with dacomitinib with at least one measured plasma concentration and were dose-compliant. Dose-compliant participants were those who received 45 mg dacomitinib daily without interruptions or dose reductions for at least 14 days prior to the day of data collection. Here, 'Number Analyzed' = participants evaluable for this outcome measure at specified time points.
    Arm/Group Title Dacomitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, up to a maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    Measure Participants 188
    Cycle 2 Day 1: Dacomitinib
    70.24
    (27.16)
    Cycle 3 Day 1: Dacomitinib
    68.34
    (25.80)
    Cycle 4 Day 1: Dacomitinib
    68.16
    (25.49)
    Cycle 5 Day 1: Dacomitinib
    64.50
    (25.52)
    Cycle 6 Day 1: Dacomitinib
    61.68
    (22.58)
    Cycle 2 Day 1: PF-05199265
    13.20
    (8.55)
    Cycle 3 Day 1: PF-05199265
    14.42
    (9.10)
    Cycle 4 Day 1: PF-05199265
    13.70
    (8.33)
    Cycle 5 Day 1: PF-05199265
    12.48
    (6.69)
    Cycle 6 Day 1: PF-05199265
    13.05
    (6.52)

    Adverse Events

    Time Frame From baseline until 28-35 days after the last dose of study drug (up to 48 months)
    Adverse Event Reporting Description The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as non-serious in another subject, or one subject may have experienced both a serious and non-serious event during the study. Safety analysis set included all participants who received at least 1 dose of study medication, with treatment assignments designated according to actual study treatment received.
    Arm/Group Title Dacomitinib Gefitinib
    Arm/Group Description Participants received 45 mg of dacomitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first. Participants received 250 mg of gefitinib tablets orally once daily in each treatment cycle of 28 days, for maximum of 48 months until disease progression, intolerable toxicities, withdrawal, death, or investigator decision dictated by protocol compliance, whichever occurred first.
    All Cause Mortality
    Dacomitinib Gefitinib
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 76/227 (33.5%) 91/224 (40.6%)
    Serious Adverse Events
    Dacomitinib Gefitinib
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 62/227 (27.3%) 50/224 (22.3%)
    Blood and lymphatic system disorders
    Leukocytosis 1/227 (0.4%) 0/224 (0%)
    Cardiac disorders
    Cardiac tamponade 1/227 (0.4%) 0/224 (0%)
    Arteriosclerosis coronary artery 0/227 (0%) 1/224 (0.4%)
    Eye disorders
    Keratitis 1/227 (0.4%) 0/224 (0%)
    Gastrointestinal disorders
    Diarrhoea 5/227 (2.2%) 0/224 (0%)
    Abdominal pain 2/227 (0.9%) 0/224 (0%)
    Abdominal distension 1/227 (0.4%) 0/224 (0%)
    Gastric ulcer haemorrhage 1/227 (0.4%) 0/224 (0%)
    Ileus 1/227 (0.4%) 0/224 (0%)
    Mouth haemorrhage 1/227 (0.4%) 0/224 (0%)
    Rectal haemorrhage 1/227 (0.4%) 0/224 (0%)
    Stomatitis 1/227 (0.4%) 0/224 (0%)
    Vomiting 1/227 (0.4%) 0/224 (0%)
    Dyspepsia 0/227 (0%) 1/224 (0.4%)
    Haematochezia 0/227 (0%) 1/224 (0.4%)
    Large intestinal obstruction 0/227 (0%) 1/224 (0.4%)
    General disorders
    Disease progression 8/227 (3.5%) 11/224 (4.9%)
    Death 1/227 (0.4%) 1/224 (0.4%)
    Multiple organ dysfunction syndrome 1/227 (0.4%) 0/224 (0%)
    Non-cardiac chest pain 1/227 (0.4%) 0/224 (0%)
    Pyrexia 1/227 (0.4%) 0/224 (0%)
    General physical health deterioration 0/227 (0%) 1/224 (0.4%)
    Hepatobiliary disorders
    Liver injury 2/227 (0.9%) 1/224 (0.4%)
    Drug-induced liver injury 1/227 (0.4%) 1/224 (0.4%)
    Bile duct stone 0/227 (0%) 1/224 (0.4%)
    Cholecystitis acute 0/227 (0%) 1/224 (0.4%)
    Infections and infestations
    Pneumonia 5/227 (2.2%) 2/224 (0.9%)
    Respiratory tract infection 2/227 (0.9%) 1/224 (0.4%)
    Urinary tract infection 2/227 (0.9%) 0/224 (0%)
    Bronchitis 1/227 (0.4%) 0/224 (0%)
    Bronchopulmonary aspergillosis 1/227 (0.4%) 0/224 (0%)
    Diverticulitis 1/227 (0.4%) 0/224 (0%)
    Escherichia urinary tract infection 1/227 (0.4%) 0/224 (0%)
    Gastroenteritis 1/227 (0.4%) 0/224 (0%)
    Infection 1/227 (0.4%) 0/224 (0%)
    Lung infection 1/227 (0.4%) 1/224 (0.4%)
    Upper respiratory tract infection 1/227 (0.4%) 0/224 (0%)
    Herpes zoster 0/227 (0%) 1/224 (0.4%)
    Injury, poisoning and procedural complications
    Facial bones fracture 1/227 (0.4%) 0/224 (0%)
    Hip fracture 1/227 (0.4%) 1/224 (0.4%)
    Overdose 1/227 (0.4%) 0/224 (0%)
    Spinal fracture 1/227 (0.4%) 0/224 (0%)
    Extradural haematoma 0/227 (0%) 1/224 (0.4%)
    Subdural haematoma 0/227 (0%) 2/224 (0.9%)
    Tibia fracture 0/227 (0%) 1/224 (0.4%)
    Investigations
    Alanine aminotransferase increased 0/227 (0%) 1/224 (0.4%)
    Aspartate aminotransferase increased 0/227 (0%) 1/224 (0.4%)
    Hepatic enzyme increased 0/227 (0%) 2/224 (0.9%)
    Metabolism and nutrition disorders
    Decreased appetite 2/227 (0.9%) 0/224 (0%)
    Dehydration 1/227 (0.4%) 0/224 (0%)
    Malnutrition 1/227 (0.4%) 1/224 (0.4%)
    Hyponatraemia 0/227 (0%) 2/224 (0.9%)
    Musculoskeletal and connective tissue disorders
    Bone pain 1/227 (0.4%) 0/224 (0%)
    Muscular weakness 1/227 (0.4%) 0/224 (0%)
    Musculoskeletal pain 1/227 (0.4%) 0/224 (0%)
    Back pain 0/227 (0%) 1/224 (0.4%)
    Polymyalgia rheumatica 0/227 (0%) 1/224 (0.4%)
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Basal cell carcinoma 1/227 (0.4%) 0/224 (0%)
    Chronic myeloid leukaemia 1/227 (0.4%) 0/224 (0%)
    Metastases to meninges 1/227 (0.4%) 0/224 (0%)
    Malignant neoplasm progression 0/227 (0%) 1/224 (0.4%)
    Pancreatic carcinoma 0/227 (0%) 1/224 (0.4%)
    Nervous system disorders
    Cerebral infarction 1/227 (0.4%) 2/224 (0.9%)
    Cerebral venous thrombosis 1/227 (0.4%) 0/224 (0%)
    Spinal cord compression 1/227 (0.4%) 0/224 (0%)
    Cerebrovascular accident 0/227 (0%) 1/224 (0.4%)
    Cognitive disorder 0/227 (0%) 1/224 (0.4%)
    Dizziness 0/227 (0%) 1/224 (0.4%)
    Post herpetic neuralgia 0/227 (0%) 1/224 (0.4%)
    Psychiatric disorders
    Depression 0/227 (0%) 1/224 (0.4%)
    Suicide attempt 0/227 (0%) 1/224 (0.4%)
    Renal and urinary disorders
    Acute kidney injury 1/227 (0.4%) 0/224 (0%)
    Ureterolithiasis 0/227 (0%) 1/224 (0.4%)
    Respiratory, thoracic and mediastinal disorders
    Pleural effusion 5/227 (2.2%) 2/224 (0.9%)
    Haemoptysis 2/227 (0.9%) 0/224 (0%)
    Pneumonitis 2/227 (0.9%) 1/224 (0.4%)
    Pneumothorax 2/227 (0.9%) 0/224 (0%)
    Respiratory failure 2/227 (0.9%) 0/224 (0%)
    Dyspnoea 1/227 (0.4%) 4/224 (1.8%)
    Interstitial lung disease 1/227 (0.4%) 1/224 (0.4%)
    Pulmonary embolism 1/227 (0.4%) 0/224 (0%)
    Bronchospasm 0/227 (0%) 1/224 (0.4%)
    Organizing pneumonia 0/227 (0%) 1/224 (0.4%)
    Skin and subcutaneous tissue disorders
    Dermatitis acneiform 1/227 (0.4%) 0/224 (0%)
    Drug eruption 1/227 (0.4%) 0/224 (0%)
    Rash maculo-papular 1/227 (0.4%) 0/224 (0%)
    Decubitus ulcer 0/227 (0%) 1/224 (0.4%)
    Vascular disorders
    Deep vein thrombosis 1/227 (0.4%) 0/224 (0%)
    Other (Not Including Serious) Adverse Events
    Dacomitinib Gefitinib
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 224/227 (98.7%) 217/224 (96.9%)
    Blood and lymphatic system disorders
    Anaemia 22/227 (9.7%) 16/224 (7.1%)
    Gastrointestinal disorders
    Diarrhoea 198/227 (87.2%) 125/224 (55.8%)
    Stomatitis 99/227 (43.6%) 40/224 (17.9%)
    Nausea 43/227 (18.9%) 49/224 (21.9%)
    Constipation 30/227 (13.2%) 31/224 (13.8%)
    Mouth ulceration 28/227 (12.3%) 13/224 (5.8%)
    Vomiting 20/227 (8.8%) 29/224 (12.9%)
    Aphthous ulcer 13/227 (5.7%) 6/224 (2.7%)
    Oral pain 12/227 (5.3%) 1/224 (0.4%)
    Abdominal pain 10/227 (4.4%) 12/224 (5.4%)
    Dysphagia 10/227 (4.4%) 12/224 (5.4%)
    Abdominal pain upper 9/227 (4%) 14/224 (6.3%)
    General disorders
    Asthenia 29/227 (12.8%) 28/224 (12.5%)
    Chest pain 22/227 (9.7%) 32/224 (14.3%)
    Fatigue 21/227 (9.3%) 19/224 (8.5%)
    Mucosal inflammation 21/227 (9.3%) 8/224 (3.6%)
    Pyrexia 19/227 (8.4%) 17/224 (7.6%)
    Oedema peripheral 13/227 (5.7%) 7/224 (3.1%)
    Pain 11/227 (4.8%) 12/224 (5.4%)
    Infections and infestations
    Paronychia 140/227 (61.7%) 45/224 (20.1%)
    Conjunctivitis 43/227 (18.9%) 9/224 (4%)
    Upper respiratory tract infection 27/227 (11.9%) 28/224 (12.5%)
    Nasopharyngitis 21/227 (9.3%) 19/224 (8.5%)
    Rash pustular 14/227 (6.2%) 3/224 (1.3%)
    Urinary tract infection 14/227 (6.2%) 8/224 (3.6%)
    Investigations
    Weight decreased 58/227 (25.6%) 37/224 (16.5%)
    Alanine aminotransferase increased 44/227 (19.4%) 88/224 (39.3%)
    Aspartate aminotransferase increased 42/227 (18.5%) 81/224 (36.2%)
    Blood bilirubin increased 20/227 (8.8%) 19/224 (8.5%)
    Blood alkaline phosphatase increased 14/227 (6.2%) 7/224 (3.1%)
    Gamma-glutamyltransferase increased 14/227 (6.2%) 20/224 (8.9%)
    White blood cell count decreased 6/227 (2.6%) 14/224 (6.3%)
    Weight increased 5/227 (2.2%) 12/224 (5.4%)
    Metabolism and nutrition disorders
    Decreased appetite 69/227 (30.4%) 56/224 (25%)
    Hypokalaemia 22/227 (9.7%) 13/224 (5.8%)
    Musculoskeletal and connective tissue disorders
    Pain in extremity 31/227 (13.7%) 26/224 (11.6%)
    Musculoskeletal pain 26/227 (11.5%) 28/224 (12.5%)
    Back pain 18/227 (7.9%) 34/224 (15.2%)
    Arthralgia 16/227 (7%) 15/224 (6.7%)
    Nervous system disorders
    Dysgeusia 16/227 (7%) 11/224 (4.9%)
    Paraesthesia 16/227 (7%) 11/224 (4.9%)
    Headache 14/227 (6.2%) 19/224 (8.5%)
    Dizziness 11/227 (4.8%) 17/224 (7.6%)
    Psychiatric disorders
    Insomnia 24/227 (10.6%) 33/224 (14.7%)
    Respiratory, thoracic and mediastinal disorders
    Cough 48/227 (21.1%) 42/224 (18.8%)
    Dyspnoea 29/227 (12.8%) 28/224 (12.5%)
    Epistaxis 21/227 (9.3%) 5/224 (2.2%)
    Nasal inflammation 15/227 (6.6%) 3/224 (1.3%)
    Haemoptysis 10/227 (4.4%) 13/224 (5.8%)
    Productive cough 9/227 (4%) 12/224 (5.4%)
    Skin and subcutaneous tissue disorders
    Dermatitis acneiform 111/227 (48.9%) 64/224 (28.6%)
    Dry skin 63/227 (27.8%) 38/224 (17%)
    Alopecia 53/227 (23.3%) 28/224 (12.5%)
    Pruritus 45/227 (19.8%) 32/224 (14.3%)
    Rash 40/227 (17.6%) 24/224 (10.7%)
    Palmar-plantar erythrodysaesthesia syndrome 33/227 (14.5%) 7/224 (3.1%)
    Rash maculo-papular 28/227 (12.3%) 27/224 (12.1%)
    Dermatitis 25/227 (11%) 9/224 (4%)
    Skin fissures 21/227 (9.3%) 6/224 (2.7%)
    Acne 20/227 (8.8%) 13/224 (5.8%)
    Erythema 12/227 (5.3%) 3/224 (1.3%)
    Vascular disorders
    Hypertension 13/227 (5.7%) 10/224 (4.5%)

    Limitations/Caveats

    Data for overall survival is not reported at Primary completion date and will be reported after the study completion date.

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    Pfizer has the right to review disclosures, requesting a delay of less than 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), less than 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.

    Results Point of Contact

    Name/Title Pfizer ClinicalTrials.gov Call Center
    Organization Pfizer, Inc.
    Phone 1-800-718-1021
    Email ClinicalTrials.gov_Inquiries@pfizer.com
    Responsible Party:
    Pfizer
    ClinicalTrials.gov Identifier:
    NCT01774721
    Other Study ID Numbers:
    • A7471050
    • DP312804
    First Posted:
    Jan 24, 2013
    Last Update Posted:
    Feb 24, 2022
    Last Verified:
    Feb 1, 2022